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        <h1 id="理解对象"><a href="#理解对象" class="headerlink" title="理解对象"></a>理解对象</h1><h3 id="概念（我讲得通俗一点）"><a href="#概念（我讲得通俗一点）" class="headerlink" title="概念（我讲得通俗一点）"></a>概念（我讲得通俗一点）</h3><ul>
<li><h4 id="类：js中没有类的概念，取了一个新的名字—原型对象"><a href="#类：js中没有类的概念，取了一个新的名字—原型对象" class="headerlink" title="类：js中没有类的概念，取了一个新的名字—原型对象"></a>类：js中没有类的概念，取了一个新的名字—原型对象</h4></li>
<li><h4 id="原型对象：把猫（人、狗…）的特性提取出来，形成猫类（人类、狗类…），这个即为原型对象，代表着一类事物"><a href="#原型对象：把猫（人、狗…）的特性提取出来，形成猫类（人类、狗类…），这个即为原型对象，代表着一类事物" class="headerlink" title="原型对象：把猫（人、狗…）的特性提取出来，形成猫类（人类、狗类…），这个即为原型对象，代表着一类事物"></a>原型对象：把猫（人、狗…）的特性提取出来，形成猫类（人类、狗类…），这个即为原型对象，代表着一类事物</h4></li>
<li><h4 id="对象（实例）：猫类（人类、狗类…）中的A猫（A人、A狗…），即为对象实例，代表一个具体事物"><a href="#对象（实例）：猫类（人类、狗类…）中的A猫（A人、A狗…），即为对象实例，代表一个具体事物" class="headerlink" title="对象（实例）：猫类（人类、狗类…）中的A猫（A人、A狗…），即为对象实例，代表一个具体事物"></a>对象（实例）：猫类（人类、狗类…）中的A猫（A人、A狗…），即为对象实例，代表一个具体事物</h4></li>
</ul>
<h3 id="对象的属性类型"><a href="#对象的属性类型" class="headerlink" title="对象的属性类型"></a>对象的属性类型</h3><p>一般为基本数据类型，也可以是另外的对象</p>
<ul>
<li><h4 id="数据属性"><a href="#数据属性" class="headerlink" title="数据属性"></a>数据属性</h4></li>
<li><h4 id="访问器属性"><a href="#访问器属性" class="headerlink" title="访问器属性"></a>访问器属性</h4><blockquote>
<h5 id="其特性详见书中139，感觉不会常用"><a href="#其特性详见书中139，感觉不会常用" class="headerlink" title="其特性详见书中139，感觉不会常用"></a>其特性详见书中139，感觉不会常用</h5></blockquote>
</li>
</ul>
<h3 id="小结"><a href="#小结" class="headerlink" title="小结"></a>小结</h3><ol>
<li>在js中一切都是对象     </li>
<li>原型对象其实也是对象                 </li>
<li>判断一个对象实例具体是什么类型用instanceof运算符<br>（引用类型中有详讲）</li>
</ol>
<hr>
<h1 id="创建对象"><a href="#创建对象" class="headerlink" title="创建对象"></a>创建对象</h1><h3 id="工厂模式（最古老）"><a href="#工厂模式（最古老）" class="headerlink" title="工厂模式（最古老）"></a>工厂模式（最古老）</h3><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line">这是一个能够根据接受的参数来构建一个包含所有必要信息的对象的函数</span><br><span class="line">function Person(name,age)&#123;</span><br><span class="line">    var o=new Object();   //创建对象实例，但无法得知对象的类型</span><br><span class="line">    o.name=name;                 //添加属性</span><br><span class="line">    o.age=age;</span><br><span class="line">    o.sayName=function()&#123;       //添加方法</span><br><span class="line">        alert(this.name);</span><br><span class="line">    &#125;;</span><br><span class="line">    return o;                  //返回对象引用       </span><br><span class="line">&#125;</span><br><span class="line">var person1=Person(&quot;greg&quot;,27);//调用函数创建对象实例</span><br></pre></td></tr></table></figure>
<h3 id="构造函数模式"><a href="#构造函数模式" class="headerlink" title="构造函数模式"></a>构造函数模式</h3><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line">function Person(name,age)&#123;</span><br><span class="line">    this.name=name;              //实例属性</span><br><span class="line">    this.age=age;</span><br><span class="line">    this.sayName=function()&#123;  //实例方法（不同实例地址不一样）</span><br><span class="line">        alert(this.name);</span><br><span class="line">    &#125;;</span><br><span class="line">&#125;</span><br><span class="line">var person1=new Person(&quot;greg&quot;,27);</span><br></pre></td></tr></table></figure>
<h3 id="原型模式"><a href="#原型模式" class="headerlink" title="原型模式"></a>原型模式</h3><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br></pre></td><td class="code"><pre><span class="line">function Person()&#123;  &#125;</span><br><span class="line">Person.prototype=&#123;</span><br><span class="line">    constructor:Person, //强制指向Person</span><br><span class="line">    name:&quot;greg&quot;,        //原型属性</span><br><span class="line">    friend:[&quot;blue&quot;,&quot;yellow&quot;],</span><br><span class="line">    sayName:function()&#123;  //原型方法（共享，地址一样）</span><br><span class="line">        alert(this.name);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;;</span><br><span class="line">var person1=new Person();</span><br><span class="line">var person2=new Person();</span><br><span class="line">person1.name=&quot;Lee&quot;;   //重写person1的名字</span><br><span class="line">alert(person1.name);  //Lee</span><br><span class="line">alert(person2.name);  //Greg</span><br><span class="line">person1.friend.push(&quot;black&quot;);</span><br><span class="line">alert(person1.friend); //blue，yellow,black</span><br><span class="line">alert(person2.friend);//blue，yellow,black</span><br></pre></td></tr></table></figure>
<p>小结：  </p>
<ol>
<li>属性的查找是先从实例中找，实例中没有该属性，便从原型中找 </li>
<li>数组friend添加了一个项，是先从person1中找数组修改，由于没找到，所以顺着原型链找到原型中的数组并修改了</li>
</ol>
<h3 id="组合使用构造函数模式和原型模式（最佳）"><a href="#组合使用构造函数模式和原型模式（最佳）" class="headerlink" title="组合使用构造函数模式和原型模式（最佳）"></a>组合使用构造函数模式和原型模式（最佳）</h3><p>构造函数模式定义实例属性<br>原型模式定义方法和原型属性</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line">function Person(name,age)&#123;</span><br><span class="line">    this.name=name;         //实例属性</span><br><span class="line">    this.age=age;</span><br><span class="line">&#125;</span><br><span class="line">Person.prototype=&#123;</span><br><span class="line">    constructor:Person,    //原型属性（共享）</span><br><span class="line">    sayName:function()&#123;    //原型方法（共享）</span><br><span class="line">        alert(this.name);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;;</span><br><span class="line">var person1=new Person(&quot;Greg&quot;,27);</span><br><span class="line">person1.sayName();      //&quot;Greg&quot;</span><br></pre></td></tr></table></figure>
<h3 id="动态原型模式"><a href="#动态原型模式" class="headerlink" title="动态原型模式"></a>动态原型模式</h3><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line">function Person(name,age)&#123;</span><br><span class="line">    this.name=name;</span><br><span class="line">    this.age=age;</span><br><span class="line">    //仅在第一次调用时初始化</span><br><span class="line">    if(typeof this.sayName!=&quot;function&quot;)&#123;</span><br><span class="line">        person.prototype.sayName=function()&#123;</span><br><span class="line">            alert(this.name);  //将原型方法封装在构造函数中</span><br><span class="line">        &#125;;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line">var person1=new Person(&quot;Greg&quot;,27);</span><br><span class="line">person1.sayName();      //&quot;Greg&quot;</span><br></pre></td></tr></table></figure>
<h3 id="寄生构造函数模式（工厂模式-构造函数模式）"><a href="#寄生构造函数模式（工厂模式-构造函数模式）" class="headerlink" title="寄生构造函数模式（工厂模式+构造函数模式）"></a>寄生构造函数模式（工厂模式+构造函数模式）</h3><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line">function Person(name,age)&#123;</span><br><span class="line">    var o=new Object();</span><br><span class="line">    o.name=name;</span><br><span class="line">    o.age=age;</span><br><span class="line">    o.sayName=function()&#123;</span><br><span class="line">        alert(this.name);</span><br><span class="line">    &#125;;</span><br><span class="line">    return o;</span><br><span class="line">&#125;</span><br><span class="line">var person1=new Person(&quot;Greg&quot;,27);</span><br><span class="line">person1.sayName();</span><br><span class="line">不能确定对象关系，不推荐使用</span><br></pre></td></tr></table></figure>
<h3 id="稳妥构造函数模式"><a href="#稳妥构造函数模式" class="headerlink" title="稳妥构造函数模式"></a>稳妥构造函数模式</h3><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line">function Person(name,age)&#123;</span><br><span class="line">    var o=new Object();</span><br><span class="line">    //可以在这里定义*私有*属性和方法</span><br><span class="line">    o.sayName=function()&#123;</span><br><span class="line">    alert(name);</span><br><span class="line">    &#125;;</span><br><span class="line">    return o;</span><br><span class="line">&#125;</span><br><span class="line">var person1=Person(&quot;Greg&quot;,27);</span><br><span class="line">person1.sayName();</span><br><span class="line">不引用this，不使用new操作符</span><br><span class="line">但除了sayName()方法没有别的方法访问原始数据，安全性很高</span><br></pre></td></tr></table></figure>
<h1 id="继承"><a href="#继承" class="headerlink" title="继承"></a>继承</h1><h3 id="原型链继承"><a href="#原型链继承" class="headerlink" title="原型链继承"></a>原型链继承</h3><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br></pre></td><td class="code"><pre><span class="line">function Super()&#123;</span><br><span class="line">    this.val=1;</span><br><span class="line">    this.arr=[1];</span><br><span class="line">&#125;</span><br><span class="line">Super.prototype.getSuper=function()&#123;</span><br><span class="line">    return true;                   //原型方法</span><br><span class="line">&#125;;</span><br><span class="line">function Sub()&#123;  &#125;</span><br><span class="line">//继承Super，把Super的对象实例赋给Sub的原型</span><br><span class="line">Sub.prototype=new Super(); </span><br><span class="line">var sub1=new Sub();</span><br><span class="line">var sub2=new Sub();</span><br><span class="line">var super1=new Super();</span><br><span class="line">sub1.val=2;</span><br><span class="line">alert(sub1.val);//2</span><br><span class="line">alert(sub2.val);//1</span><br><span class="line">sub1.arr.push(2);</span><br><span class="line">alert(sub1.arr);//1,2</span><br><span class="line">alert(sub2.arr);//1,2</span><br><span class="line">Sub.prototype.getSuper=function()&#123;  //重写方法</span><br><span class="line">    return false;    </span><br><span class="line">&#125;;</span><br><span class="line">alert(sub1.getSuper());//false  //调用重写后的方法</span><br><span class="line">alert(super1.getSuper());//true  //调用原来的方法</span><br></pre></td></tr></table></figure>
<p>小结：     </p>
<ol>
<li>重写方法或添加新方法需写在继承后        </li>
<li>属性查找是先从对象实例中找，没有就顺着原型链继续向上查找</li>
<li>创建子类实例时，无法向父类构造函数传参</li>
</ol>
<h3 id="借用构造函数继承"><a href="#借用构造函数继承" class="headerlink" title="借用构造函数继承"></a>借用构造函数继承</h3><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line">function Super(val)&#123;</span><br><span class="line">    this.val=val;</span><br><span class="line">    this.arr=[1];</span><br><span class="line">    this.getSuper=function()&#123;  &#125;;//方法在构造函数中，无法复用</span><br><span class="line">&#125;</span><br><span class="line">function Sub(val)&#123;</span><br><span class="line">    Super.call(this,val); //继承Super，类似于对象冒充</span><br><span class="line">&#125;</span><br><span class="line">var sub1=new Sub(1);</span><br><span class="line">var sub2=new Sub(2);</span><br><span class="line">alert(sub1.val);        //1</span><br><span class="line">alert(sub2.val);       //2</span><br><span class="line">alert(sub1.getSuper==sub2.getSuper);//false</span><br><span class="line">每个子类实例都有新的方法地址，内存要爆炸了！！！</span><br></pre></td></tr></table></figure>
<h3 id="组合继承（最常用）"><a href="#组合继承（最常用）" class="headerlink" title="组合继承（最常用）"></a>组合继承（最常用）</h3><p>原型链：对原型属性和方法的继承<br>借用构造函数：对实例属性的继承</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line">function Super(val)&#123;</span><br><span class="line">    this.val=val;</span><br><span class="line">    this.arr=[1];</span><br><span class="line">&#125;</span><br><span class="line">Super.prototype.getSuper=function()&#123;</span><br><span class="line">    return true;                   //原型方法</span><br><span class="line">&#125;;</span><br><span class="line">function Sub(val)&#123;</span><br><span class="line">    Super.call(this,val);     //继承Super</span><br><span class="line">&#125;</span><br><span class="line">Sub.prototype=new Super();     //继承Super</span><br><span class="line">var sub1=new Sub(1);</span><br><span class="line">var sub2=new Sub(2);</span><br><span class="line">alert(sub1.val);        //1</span><br><span class="line">alert(sub2.val);       //2</span><br><span class="line">alert(sub1.getSuper==sub2.getSuper);//true</span><br></pre></td></tr></table></figure>
<h3 id="原型式继承（类似于对象复制）"><a href="#原型式继承（类似于对象复制）" class="headerlink" title="原型式继承（类似于对象复制）"></a>原型式继承（类似于对象复制）</h3><p>创建新对象–&gt;返回该对象–&gt;增强（添加属性/方法）</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br></pre></td><td class="code"><pre><span class="line">// 生孩子函数 beget：龙beget龙，凤beget凤</span><br><span class="line">//创建新的obj的对象实例</span><br><span class="line">function beget(obj)&#123;   </span><br><span class="line">    var F = function()&#123;&#125;;</span><br><span class="line">    F.prototype = obj;</span><br><span class="line">    return new F();</span><br><span class="line">&#125;</span><br><span class="line">function Super()&#123;</span><br><span class="line">    this.val = 1;</span><br><span class="line">    this.arr = [1];</span><br><span class="line">&#125;</span><br><span class="line">// 生孩子</span><br><span class="line">var sub = beget(new Super());   // 核心</span><br><span class="line">// 添加属性</span><br><span class="line">sub.attr1 = 1;</span><br><span class="line">sub.attr2 = 2;</span><br><span class="line">alert(sub.val);     // 1</span><br><span class="line">alert(sub.arr);     // 1</span><br><span class="line">alert(sub.attr1);   // 1</span><br><span class="line">不像继承？</span><br></pre></td></tr></table></figure>
<h3 id="寄生式继承"><a href="#寄生式继承" class="headerlink" title="寄生式继承"></a>寄生式继承</h3><p>创建新对象–&gt;增强–&gt;返回该对象</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br></pre></td><td class="code"><pre><span class="line">// 生孩子函数 beget：龙beget龙，凤beget凤。</span><br><span class="line">function beget(obj)&#123;   </span><br><span class="line">    var F = function()&#123;&#125;;</span><br><span class="line">    F.prototype = obj;</span><br><span class="line">    return new F();</span><br><span class="line">&#125;</span><br><span class="line">function Super()&#123;</span><br><span class="line">    this.val = 1;</span><br><span class="line">    this.arr = [1];</span><br><span class="line">&#125;</span><br><span class="line">function getSubObject(obj)&#123;</span><br><span class="line">    // 创建新对象</span><br><span class="line">    var clone = beget(obj); // 核心</span><br><span class="line">    // 添加属性</span><br><span class="line">    clone.attr1 = 1;</span><br><span class="line">    clone.attr2 = 2;</span><br><span class="line"> </span><br><span class="line">    return clone;</span><br><span class="line">&#125;</span><br><span class="line"> </span><br><span class="line">var sub = getSubObject(new Super());</span><br><span class="line">alert(sub.val);     // 1</span><br><span class="line">alert(sub.arr);     // 1</span><br><span class="line">alert(sub.attr1);   // 1</span><br><span class="line">给原型式继承穿个马甲？</span><br></pre></td></tr></table></figure>
<h3 id="寄生组合式继承（最佳，但组合继承最常用）"><a href="#寄生组合式继承（最佳，但组合继承最常用）" class="headerlink" title="寄生组合式继承（最佳，但组合继承最常用）"></a>寄生组合式继承（最佳，但组合继承最常用）</h3><p>有缺陷的寄生式继承+不完美的组合继承</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br></pre></td><td class="code"><pre><span class="line">// 生孩子函数 beget：龙beget龙，凤beget凤</span><br><span class="line">//创建新的obj的对象实例</span><br><span class="line">function beget(obj)&#123;   </span><br><span class="line">    var F = function()&#123;&#125;;</span><br><span class="line">    F.prototype = obj;  </span><br><span class="line">    return new F();</span><br><span class="line">&#125;</span><br><span class="line">function Super()&#123;</span><br><span class="line">    this.val = 1;</span><br><span class="line">    this.arr = [1];</span><br><span class="line">&#125;</span><br><span class="line">//  在此处声明函数</span><br><span class="line">Super.prototype.getSuper = function()&#123;&#125;;</span><br><span class="line">function Sub()&#123;</span><br><span class="line">    Super.call(this);   // 继承</span><br><span class="line">&#125;</span><br><span class="line">//继承，把实例赋给Sub的原型</span><br><span class="line">var proto = beget(Super.prototype); </span><br><span class="line">proto.constructor = Sub;           </span><br><span class="line">Sub.prototype = proto;             </span><br><span class="line"> </span><br><span class="line">var sub = new Sub();</span><br><span class="line">alert(sub.val);  //1</span><br><span class="line">alert(sub.arr);  //1</span><br></pre></td></tr></table></figure>
<p>大总结：加油！棒棒哒！熬过这一章其余就轻松啦啦啦！已经写得尽可能详细了，多多复习！</p>

      
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              <div class="post-toc-content"><ol class="nav"><li class="nav-item nav-level-1"><a class="nav-link" href="#理解对象"><span class="nav-number">1.</span> <span class="nav-text">理解对象</span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#概念（我讲得通俗一点）"><span class="nav-number">1.0.1.</span> <span class="nav-text">概念（我讲得通俗一点）</span></a><ol class="nav-child"><li class="nav-item nav-level-4"><a class="nav-link" href="#类：js中没有类的概念，取了一个新的名字—原型对象"><span class="nav-number">1.0.1.1.</span> <span class="nav-text">类：js中没有类的概念，取了一个新的名字—原型对象</span></a></li><li class="nav-item nav-level-4"><a class="nav-link" href="#原型对象：把猫（人、狗…）的特性提取出来，形成猫类（人类、狗类…），这个即为原型对象，代表着一类事物"><span class="nav-number">1.0.1.2.</span> <span class="nav-text">原型对象：把猫（人、狗…）的特性提取出来，形成猫类（人类、狗类…），这个即为原型对象，代表着一类事物</span></a></li><li class="nav-item nav-level-4"><a class="nav-link" href="#对象（实例）：猫类（人类、狗类…）中的A猫（A人、A狗…），即为对象实例，代表一个具体事物"><span class="nav-number">1.0.1.3.</span> <span class="nav-text">对象（实例）：猫类（人类、狗类…）中的A猫（A人、A狗…），即为对象实例，代表一个具体事物</span></a></li></ol></li><li class="nav-item nav-level-3"><a class="nav-link" href="#对象的属性类型"><span class="nav-number">1.0.2.</span> <span class="nav-text">对象的属性类型</span></a><ol class="nav-child"><li class="nav-item nav-level-4"><a class="nav-link" href="#数据属性"><span class="nav-number">1.0.2.1.</span> <span class="nav-text">数据属性</span></a></li><li class="nav-item nav-level-4"><a class="nav-link" href="#访问器属性"><span class="nav-number">1.0.2.2.</span> <span class="nav-text">访问器属性</span></a><ol class="nav-child"><li class="nav-item nav-level-5"><a class="nav-link" href="#其特性详见书中139，感觉不会常用"><span class="nav-number">1.0.2.2.1.</span> <span class="nav-text">其特性详见书中139，感觉不会常用</span></a></li></ol></li></ol></li><li class="nav-item nav-level-3"><a class="nav-link" href="#小结"><span class="nav-number">1.0.3.</span> <span class="nav-text">小结</span></a></li></ol></li></ol></li><li class="nav-item nav-level-1"><a class="nav-link" href="#创建对象"><span class="nav-number">2.</span> <span class="nav-text">创建对象</span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#工厂模式（最古老）"><span class="nav-number">2.0.1.</span> <span class="nav-text">工厂模式（最古老）</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#构造函数模式"><span class="nav-number">2.0.2.</span> <span class="nav-text">构造函数模式</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#原型模式"><span class="nav-number">2.0.3.</span> <span class="nav-text">原型模式</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#组合使用构造函数模式和原型模式（最佳）"><span class="nav-number">2.0.4.</span> <span class="nav-text">组合使用构造函数模式和原型模式（最佳）</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#动态原型模式"><span class="nav-number">2.0.5.</span> <span class="nav-text">动态原型模式</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#寄生构造函数模式（工厂模式-构造函数模式）"><span class="nav-number">2.0.6.</span> <span class="nav-text">寄生构造函数模式（工厂模式+构造函数模式）</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#稳妥构造函数模式"><span class="nav-number">2.0.7.</span> <span class="nav-text">稳妥构造函数模式</span></a></li></ol></li></ol></li><li class="nav-item nav-level-1"><a class="nav-link" href="#继承"><span class="nav-number">3.</span> <span class="nav-text">继承</span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#原型链继承"><span class="nav-number">3.0.1.</span> <span class="nav-text">原型链继承</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#借用构造函数继承"><span class="nav-number">3.0.2.</span> <span class="nav-text">借用构造函数继承</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#组合继承（最常用）"><span class="nav-number">3.0.3.</span> <span class="nav-text">组合继承（最常用）</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#原型式继承（类似于对象复制）"><span class="nav-number">3.0.4.</span> <span class="nav-text">原型式继承（类似于对象复制）</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#寄生式继承"><span class="nav-number">3.0.5.</span> <span class="nav-text">寄生式继承</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#寄生组合式继承（最佳，但组合继承最常用）"><span class="nav-number">3.0.6.</span> <span class="nav-text">寄生组合式继承（最佳，但组合继承最常用）</span></a></li></ol></li></ol></li></ol></div>
            

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